Crypto

Unicode Encoder & Decoder

A tool for bidirectional conversion between text and Unicode escape sequences (such as \uXXXX format).

HTML Entity Encoder & Decoder

Convert HTML special characters to and from entity codes for secure web rendering and code display.

JJEncode Encoder & Decoder | Online JS Obfuscator

Free online JJEncode tool for JavaScript obfuscation and deobfuscation. Easily encode JS for code protection or decode strings for security analysis.

Base32 Encoder and Decoder

Base32 encoder and decoder tool for converting binary data into readable alphanumeric strings. Ideal for DNSSEC, file naming, and more.

Base58 Encoder & Decoder

Easily convert text to Base58 and vice versa. Ideal for blockchain address processing and data verification.

URL Encoder & Decoder

Convert special characters and spaces into percent-encoded URLs and vice versa to solve character compatibility issues in web development and data transmission.

SHAKE Hash Generator

Variable-length hash generator for SHAKE-128/256, featuring salt support, multiple iterations, and various input/output formats.

Serpent Encryption & Decryption Tool

A text encryption and decryption tool based on the Serpent algorithm, supporting multiple key lengths and operation modes.

UUID Generator

Bulk generate unique identifiers (UUID/GUID) across multiple versions (V1-V7) for developers and system design.

BLAKE Hash Calculator

A hash generator supporting BLAKE2b and BLAKE2s algorithms with configurable keys, salts, and output lengths for data integrity verification and message authentication.

Index of Coincidence Calculator

Calculate the Index of Coincidence (IC) for cryptanalysis and language identification with English letter frequency statistics.

FNV Hash Calculator

Calculate FNV hashes online for any string. Supports FNV1, FNV1a, and various input formats for data validation and hashing applications.

Chinese to UTF-8 Encoder & Decoder

Convert between Chinese characters and UTF-8 encoding online. Supports fast conversion between plain text strings and percent-encoding formats.

Bulk SHA Hash Generator

Bulk generate SHA-1, SHA-256, and SHA-512 hashes. Supports HEX/Base64 formats and case conversion for data validation and digital signatures.

Keccak Hash Calculator

Online hash tool supporting Keccak-224, 256, 384, and 512 algorithms. Features custom salt, iterations, and multiple input/output formats.

UTF-8 Encoder & Decoder

A versatile UTF-8 encoder and decoder supporting Escape, percent, hex, Unicode escape, and BOM modes. Perfect for development and debugging.

Bulk MD5 Hash Generator

Free bulk MD5 hash calculator supporting multi-line text and file uploads. Outputs HEX/Base64 formats with CSV export.

MD6 Hash Generator

Generate 128, 256, or 512-bit MD6 hashes online. Supports custom keys and iteration levels for data validation and secure message digests.

RC4 Encryption & Decryption Tool

Perform RC4 stream cipher encryption and decryption online. Supports direct text input and secret key management.

URL Hex Encoder & Decoder

Convert between URL strings and hex-encoded formats online to easily solve special character transmission issues.